Roll-mounting



2 Sheets-Sheet 1.

(No Model.)

R. A. GARSLBR ROLL MOUNTING. No. 285,567.

Patented Sept. 25,1883'.

` UNITED 'STATES PATENT` OFFICE? ROBERT A. CARTER, OF PITTSBURG,PENNSYLVANIA.

ROLL-MOUNTING.

SPECIFICATION forming' part of Letters Patent No. 285,567, datedseptembr 25, 188s. Application filed `April 19,1883. (No model.)

' cation, in whichlike letters indicating like l nal-boxes, so that theboxes have bearing both parts- Figure l, Sheet l, is a View in endelevation of my improved roll-mounting. Fig. 2 is a view of the same inside elevation, partly in section. Fig. 3, Sheet 2, is a vertical sec-I.tional View takenin the planeV of one of the housings; and Fig. 4c isa perspective view of a portion of a roll and its j ournal-bearing.

My invention relates to certain improve- `ments in mechanism formounting and adjusting rolls; and in general terms it consists ofcertain combinations of housings having openings with rounded ends,forming seats for cylindrical journal-boxes, such boxes havingjournal-openings therein out of their centers, and gear mechanism formoving and holding the journal-boxes, whereby the rolls may be adjustedtoward and from each other, and other advantages secured, as hereinaftermore fully described and claimed.

In the drawings, A A represent a pair of roll-housings for mountingrolls BB. In the housings are made vertical slot-openings A A, havinghalf-round ends a, (see Fig. 3,) uponwhich are seated cylindricaljournalboxes C. The length of the slot-openings is equal to the sum ofthe diameters of the jourupon the slot endsand also upon each other,giving them rm support and providing for their rotation with 'uniformityand steadiness of movement.

Gpenings or bearings c for the roll-j ournals b are made inthe boxes C,out of or alittle to one side oftheir centers, with the usual or anysuitable form of brasses, c', orequivalent bearing-strips secured bygrooves c'l and screwbolts c. These boxes C are in effect eccentricshaving fixed periphery-bearings, whereby notation of the boxes will givethe eccentric'journal-bearings movement in the are of a circle. If theseeccentric bearings or boxes are rotated in opposite directions, therolls will be made to approach or separate from each other.

As illustrated in the drawings, the rolls are at their limit Aofseparation, so that rotation in either direction will cause them toapproach. In order to eiiect such rotation of the eccentrics and toprovide for holding the rolls at any desired position of adjustmentsecured by such rotation, I make use of gears E E, cast on or secured tothe ends of the boxes concentric therewith, which gears intermesh andare driven with slow but powerful movement by means of worm-wheel E',journaled in suitable bearings on the face ofthe housings, as at e.Rotation of the wornrgear by power or by hand will cause rotation ofboth eccentrics C. On the other hand, resistance to rotary force appliedfrom the eccentrics or gears E will be so great that the worms willform, practically, a lock, holding the rolls in any desired position ofadjustment. The principal disturbing force is a tendency to separate therolls by pressure of the article being rolled. This tendency may bereduced materially by causing the rolls to rotate for work in the samedirection as the eccentrics are turned for adjusting the rolls towardeach other-say as indicated by the arrows r s, Fig. 3- thereby causingthe rotary force due to journal-friction to be operative through theeccentrics in holding the rolls.

against separation by working-pressure. This action is more apparent andeffective at intermediate positionsv of adjustment, in which the rollcenters areont of thevertical plane through the centers of thejournal-boxes. In these positions the weight ofthe rolls has also atendency to move the eccentrics, carrying` both rolls downward byturning the eccentrics in the same direction. This tendency iscounteracted, however, by the gearing, which will not permit theeccentrics to rotate in the same but, rather, in opposite directions.Consequently, the weight of one roll acting through its eccentrics willbe counterbalanced bythe other roll acting through its eccentrics. Thisprovision or feature of roll-balance-greatly facilitates movement foradjustment, affording substantially the same advantages in this respectas secured heretofore by lever-andweight balance for the upper movableroll. So far as I am aware it is new with me to accomplish thisdesirable feature by balancing the rolls one with the other, supportingthem, as it were, upon the opposite ends of a leverbalance, which in thepresent instance is formed by the eccentrics and gearing.

I have illustrated my invention applied to two rolls; but it may beapplied in substantially the same manner to more than two- `say to threerolls, constituting a three-high millby mounting the upper and lowerroll in eccentric boxes, such as described, and connecting them bygearing, whereby rotary movement of the eccentrics will cause the upperand lower rolls to approach or recede both from each other and from theintermediate roll. The rolls are mounted in both housings in similarmanner, and in order to move the eceentrics at both ends simultaneouslythe worms E (see Figs. l and 2) are connected by shaft H and bevel-gearsh 71., so that power applied to one worm-shaft will be communicated tothe other.

As rolls are ordinarily mounted, the lower roll isfixed and the uppermovable for adjustment; also, in close adjustment, as in sheet or platerolls, the upper roll rides upon the lower when not separated therefromby the article being rolled. In such mountings the upper roll falls uponthe face of theA lower roll upon delivery ofthe article, and 'soonproduces a kind of granul ati on or imperfection technically yknown asspalling,7 requiring frequent returning or reiitting with considerableexpense. Vith my improved roll-mountings this difficulty is whollyobviated, for, as before stated, the journal-boxes C bear upon eachother, (see Fig. 3,) even in the closest positions of adjustment, sothat these boxes prevent actual contact of the roll-faces and take allconcussion or force of reaction when the rolled article is delivered.This I consider an important feaaccuracy of adjustment, and much of thetime, labor, and skill heretofore required in lining and adjusting therolls preparatory to use will be saved by this improved mounting.

I claim herein as my inventionl.. The combination of rolls B, housingsA, cylindrical journal-boxes C, having journalbearings eccentricallylocated therein, `and gear mechanism connecting the boxes, substantiallyas set forth, whereby provision is made for adjusting the-rolls towardand from each other, and for counterbalancing the weight of one by theother.

2. The combination of rolls B, housings A, having slots A therein, andcylindrical journal-boxes C, having `journal-bearings eccentricallylocated therein, such boxes also bearing one against the other withinthe housingslots, substantially as set forth, whereby contact of therolls is prevented on delivery of the rolled article.

3. The combination of two or more metalreducing rolls B, two housings A,having slotopenings therein, with rounded ends or seats a, andcylindrical j ournal-boxes C, having bearings eccentrically locatedtherein, such boxes being seated upon the rounded ends of Ythehousing-slots, substantially as set forth.

4. The combination of rolls B, housings A, having openings A therein,cylindrical `journal-boxes C, having roll-bearings eccentrically locatedtherein, the length of openings A being equal to the sum of thediameters of the journal-boxes, rand gear mechanism for rotating thejournal-boxes simultaneously in opposite directions, substantially asset forth.

5. The combination of rolls B, housings A, cylindrical journal-boxes C,having roll-bearings eccentrically located therein, gears E, connectingthe journal-boxes, and worms E', substantially as set forth.

In testimony whereof I have hereunto set my hand. I

ROBERT A. CARTER.

Vitnesses:

R. H. VHITTLESEY, C. L. PARKER.

